题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022338-56472.png)
A.1+![]() | B.1-![]() | C.-1-![]() | D.-1+![]() |
答案
解析
试题分析:因为tan300°+
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022340-43253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022340-38543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022340-12867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022340-38543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022340-52243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022340-43253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925022340-12867.png)
点评:解决该试题的思路将负角化为正角,大角化为小角,化到锐角就可以了。
核心考点
试题【tan300°+的值是( )A.1+ B.1- C.-1-D.-1+】;主要考察你对两角和与差的三角函数等知识点的理解。[详细]
举一反三
已知A、B、C坐标分别为A(3,0),B(0,3),C(
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020855-35276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020855-70621.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020856-14863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020856-13992.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020856-68835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020856-10334.png)
在锐角
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020549-77574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020549-38991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020550-67433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020550-25252.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020550-85587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020550-36640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020551-70176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020551-37143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020551-40078.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020551-68174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020551-78968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020552-57601.png)
(1)求角
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020550-67433.png)
(2)如果
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020552-20718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020549-77574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925020552-91513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015840-39757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015840-92097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015840-18859.png)
(Ⅰ)求角
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015841-81166.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015840-39757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015841-46108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015743-82208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925015743-45077.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013741-13289.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013742-50335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013742-82373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013742-58282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013742-58226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013742-93893.png)
(1)求角
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013743-72156.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013743-25710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013743-30205.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013743-93369.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013743-30205.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013744-65318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190925/20190925013744-66563.png)
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